[MADLIB-895] Incorrect examples in hypothesis tests documentation

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Abandoned
• Fix Version/s: v1.9
• Component/s: Module: Inferential Statistics
• Assignee: Frank McQuillan
• Reporter: Rahul Iyer
• Created: 29/Jun/15 19:10
• Updated: 22/Mar/18 18:40
• Resolved: 22/Mar/18 18:40

Description

The SQL and results for the example for Chi-2 tests is wrong. The documentation shows the result as

     statistic     |       p_value        | df |       phi        | contingency_coef
 ------------------+----------------------+----+------------------+-------------------
  138.289841626008 | 2.32528678709871e-25 |  9 | 2.93991753313346 | 0.946730727519112

whereas it should be,

    statistic     |       p_value        | df |       phi       | contingency_coef
------------------+----------------------+----+-----------------+-------------------
 320.125868955635 | 1.39464882809491e-63 |  9 | 4.4730154045931 | 0.975909209031126
(1 row)

The SQL also has a couple of errors and does not run as is.